Re: [Discuss-gnuradio] AM receiver

[michael taylor]

On 10/31/05, Gituma Nturibi <address@hidden> wrote:
> I'm back again with a few questions about GNU radio. As I had said earlier I
> was thinking about creating an Fm receiver. However cost and complexity
> considerations have made me think about trying AM reception instead. Taking
> into account I'm based in Kenya so shipping would be an issue and a budget
> of about $120, very small!
> The problem is that I'm on a tight time schedule and require to get the
> project up and running soon. So I would like to know what is the best I can
> achieve using a PC sound card or some other cheap ADC board.
>
> I would also like to know where I can find the code for AM reception
> particularly the MW band.
>
> I'm also looking for information on FM tuner cards- Is there a way to tap
> the IF from the card and use it as a front end? I would appreciate input on

I think using a FM tuner card is overkill, you are better off going to
a "Dollar Store" or "Pound shop" (a place that sells low-quality cheap
items, often manufacted in China) and buying a cheap battery powered
radio there to modify so you can tap the IF of the radio with no
worries about ruining an expensive tuner card.

If you have access to a modest source of electronic parts, two easy to
build radios designs are:
 <http://www.njqrp.org/regen/index.html>
 <http://www.amqrp.org/kits/tin_ear/index.html> (no longer available
as a kit from AmQRP)